Réponses

2014-03-19T15:58:39+01:00
Résoudre les équations :
5+6x = -x-9 
6x+x = -9-5
7x= -14
x=-14/7
x=- 2
7x-(5x+3) = 5(x-3)+2
7x -5x +3 =5x -15 +2
2x +3 = 5x -13
2x -5x = -13 -3
-3x =-16
x= 16/3

x/2 = x/4 -6/5
x/2 -x/4 = - 6/5
2/4x -1/4x =- 6/5
1/4x = -6/5
x= 4*-6/5
x= -24/5